Water-cooled damper



(No Model.)

S. B. DEXTER. WATER oooLED DAMPER.

Patented May 3, 1892.

W/TA/ESSES:

s P s s co., rudio-um UNITED STlrrnsl SIMON B. DEXTER, OF

GLENDALE, MONTANA.

WATER-COOLED DAMPER.

SPEGIFICATION forming part of Letters Application filed August 20, 1890.

To cZZZ whom t may concern,.-

Be it known that I, SIMON B. DEXTER, of Glendale, in the county ofBeaver Head and State of Montana, have invented a new and ImprovedWater-Cooled Damper, of which the following is a specification,reference being had to the annexed drawings, forming a part thereof, inwhich- Figure l is a vertical transverse section of a portion of afurnace to which my improved damper is applied. Fig. 2 is a horizontalsection taken on line .fr in Fig. l, and Fig. 3 is a horizontal sectiontaken on line y y in Fig. l.

Similar letters of reference indicate correspending parts in all theviews.

The object of my invention is to provide a damper applicable to allducts or hues where flameand hot productsof combustion pass,and moreparticularly for use in connection with my improved ore-roasting furnacedescribed in my patent, No. 436,3l0, dated September 16, 1890.

My invention consists in the construction and arrangement of 'partshereinafter described and claimed.

The furnace-Walls A are provided with a duct B, leading to the iiue C.Upon the Walls A is placed a hollow annular damper-seat D, which ispreferably of triangular section. The aperture of the damper-seat is ofthe form and size of the duct B and forms practically acontnuation ofthe said duct. The water-space a in the annular seat D is stopped at onepoint by the partition Z9, and in the annular seat, at one side of thepartition,is inserted the watersupply pipe c and in the opposite side ofthe partitionisinsertedthedischarge-pipe CZ. The

Patent N0. 474,227, dated May 3, 1892.

SerialNo, 362,510. (No model.)

branches c e nearly to the opposite side. In the branches c e areinserted pipes g g", which form the shaft of the damper, and also serveto convey water to and away from the damper. The pipes g g are journaledin standards Zt h', and in the outer end of the pipeg is inserted awater-supply pipe t and in the opposite end is inserted thedischarge-pipe j, the joint between the supply and discharge pipes beingmade tight by stuffing boxes Za 7c'. The damper E is counterbalanced byweighted levers Z Z', attached to the pipes g g near their free ends. Tothe lever Z is pivoted a rod m, by means of which the damper is openedor closed. Water enters the damper E through the supply-pipe t', thepipe g, and the branch e, and passing through the damper it is made toflow around the partition f, after which it passes out through thebranch e', the pipe g', and the discharge-pipej.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent l. The combination,with the hollow seat D, having inlet and outlet water-pipes, of thehollow vertically-swinging damper or valve resting on the upper edge ofsaid seat and provided with inlet and outlet pipes g g', respectively,bearings Zt 7L', in which said pipes are journaled, arms projecting frompipes g g adj ustable counterbalancing-Weights ZZ', mounted on saidpipes, and means for operating the valve, substantially as set forth.

2. The combination, with the enlarged Hue C and the smaller duct B,leading downward from its bottom, of the hollow annular seat on thebottom ofthe line concentric with its duct and having the inlet andoutlet pipes, the vertically-swinging counterbalanced hollow damper E ontop of the seat and having inlet and outlet pipes g g extending outthrough the walls of the flue, bearings h 7L', in which said pipes arejournaled, and means for operating the damper, substantially as setforth.

SIMON B. DEXTER.

Witnesses:

THOMAS H. TEAL,

GEO. B. CONWAY.

